package com.qd.panda.service.park;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.DateUtil;
import com.cdqidi.util.RedisTemplateUtil;
import com.cdqidi.util.SpringContextHolder;
import com.qd.common.panda.domain.entity.carpark.CarParkAppointmentSetDTO;
import com.qd.panda.mapper.park.CarParkAppointmentSetMapper;
import com.qd.panda.model.CarParkAppointmentSet;
import com.qd.panda.service.stroke.BigDecimalUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

import static java.util.stream.Collectors.toList;

/**
 * 预约设置
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class CarParkAppointmentSetService extends BaseService<CarParkAppointmentSetMapper, CarParkAppointmentSet> {

    public static final String PREFIX_ID = "panda_car_park_appointment_set_pId_{0}";
    /**
     * 预约车位数量，只有强制预约的才计算数量
     */
    public static final String PREFIX_NUM = "panda_car_park_appointment_set_num_pId_{0}";
    /**
     * 前往停车场停车的数量，只要预约了就+1，不管是强制还是普通
     */
    public static final String PREFIX_GO_TO_NUM = "panda_car_park_go_to_num_pId_{0}";

    private final RedisTemplateUtil<CarParkAppointmentSet> redisTemplateUtil;


    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkAppointmentSetDTO save(CarParkAppointmentSetDTO dto) {
        final CarParkAppointmentSet model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkAppointmentSetDTO update(CarParkAppointmentSetDTO dto) {
        final CarParkAppointmentSet historyModel = Optional.ofNullable(getById(dto.getPId())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final CarParkAppointmentSet model = dtoToModel(dto);
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 删除，单个
     *
     * @param pId 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String pId) {
        final CarParkAppointmentSet model = Optional.ofNullable(getById(pId)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(pId)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 批量删除
     *
     * @param ids 主键集合
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeBatchIds(List<String> ids) {
        List<CarParkAppointmentSet> historyModelList = checkIds(ids);
        try {
            if (!super.removeByIds(ids)) {
                throw new ApiException("批量删除失败");
            }
        } finally {
            historyModelList.clear();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(CarParkAppointmentSetDTO dto) {
        final QueryWrapper<CarParkAppointmentSet> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param pId 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String pId) {
        boolean exists = false;
        if (StringUtils.hasLength(pId)) {
            final CarParkAppointmentSet model = getById(pId);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param pId 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkAppointmentSet getById(String pId) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, pId);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(pId), CarParkAppointmentSet.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param pId 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkAppointmentSetDTO getByIdDto(String pId) {
        return Optional.ofNullable(getById(pId)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkAppointmentSet getOne(CarParkAppointmentSetDTO dto) {
        final QueryWrapper<CarParkAppointmentSet> queryWrapper = createQueryWrapper(dto);
        CarParkAppointmentSet model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkAppointmentSetDTO getOneDto(CarParkAppointmentSetDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<CarParkAppointmentSet> getList(CarParkAppointmentSetDTO dto) {
        final QueryWrapper<CarParkAppointmentSet> queryWrapper = createQueryWrapper(dto);
        final List<CarParkAppointmentSet> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<CarParkAppointmentSetDTO> getListDto(CarParkAppointmentSetDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(CarParkAppointmentSet model) {
        if (null == model) {
            return;
        }
        String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getPId());
        redisTemplateUtil.deleteByKey(key);
        redisTemplateUtil.deleteByKey(RedisTemplateUtil.getRedisCacheKey(PREFIX_NUM, model.getPId()));
        ParkCacheService.NUM_CACHE.remove(model.getPId());
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<CarParkAppointmentSet> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getPId())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
        List<String> numList = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_NUM, model.getPId())).collect(toList());
        if (!numList.isEmpty()) {
            redisTemplateUtil.deleteByKey(numList);
            numList.clear();
        }
        list.forEach(carParkAppointmentSet -> ParkCacheService.NUM_CACHE.remove(carParkAppointmentSet.getPId()));
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public CarParkAppointmentSetDTO modelToDto(CarParkAppointmentSet model) {
        if (null == model) {
            return null;
        }
        final CarParkAppointmentSetDTO dto = new CarParkAppointmentSetDTO();
        dto.setPId(model.getPId());
        dto.setTime(model.getTime());
        dto.setAmount(model.getAmount());
        Optional.ofNullable(model.getBeginTime()).ifPresent(beginTime -> dto.setBeginTime(beginTime.format(DateTimeFormatter.ofPattern(DateUtil.PATTERN_TIME))));
        Optional.ofNullable(model.getEndTime()).ifPresent(endTime -> dto.setEndTime(endTime.format(DateTimeFormatter.ofPattern(DateUtil.PATTERN_TIME))));
        dto.setNum(model.getNum());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public CarParkAppointmentSet dtoToModel(CarParkAppointmentSetDTO dto) {
        if (null == dto) {
            return null;
        }
        final CarParkAppointmentSet model = new CarParkAppointmentSet();
        model.setPId(dto.getPId());
        model.setTime(dto.getTime());
        model.setAmount(dto.getAmount());
        Optional.ofNullable(dto.getBeginTime()).ifPresent(beginTime -> model.setBeginTime(LocalTime.parse(beginTime, DateTimeFormatter.ofPattern(DateUtil.PATTERN_TIME))));
        Optional.ofNullable(dto.getEndTime()).ifPresent(endTime -> model.setEndTime(LocalTime.parse(endTime, DateTimeFormatter.ofPattern(DateUtil.PATTERN_TIME))));
        model.setNum(dto.getNum());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(CarParkAppointmentSetDTO dto) {
        Optional.ofNullable(dto.getAmount()).ifPresent(amount -> {
            dto.setAmountDisplay(BigDecimalUtil.buildDefaultScale(amount).stripTrailingZeros().toPlainString());
            //剩余预约数量
            final int appointmentNum = SpringContextHolder.getBean(ParkCacheService.class).getAppointmentNum(dto.getPId());
            //已使用数量
            int usedNum = dto.getNum()-appointmentNum;
            dto.setUsedNum(usedNum);
        });
    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<CarParkAppointmentSetDTO> modelToDtoList(List<CarParkAppointmentSet> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<CarParkAppointmentSet> dtoToModelList(List<CarParkAppointmentSetDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<CarParkAppointmentSet> createQueryWrapper(CarParkAppointmentSetDTO dto) {
        return createQueryWrapper(dto, "");
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto        查询参数，不为空的属性会被自动加入
     * @param tableAlias 表别名
     */
    public QueryWrapper<CarParkAppointmentSet> createQueryWrapper(CarParkAppointmentSetDTO dto, String tableAlias) {
        return new QueryWrapper<>();
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     */
    public List<CarParkAppointmentSet> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<CarParkAppointmentSet> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(CarParkAppointmentSet::getPId).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }
}